Typing a positive and realistic personal message as a password is a terrific idea from a psychological point of view. [...] People become the words and phrases they say the most.

Note that, despite the examples and advice in the article, a good password doesn’t necessarily have to be super-complicated. Arguably, a better way to make a hard-to-crack yet still easy-to-remember password is to just make it longer.

So maybe a password along these lines could improve your accordion playing?